\tikzset{
    % header decor right/.style={gray,line width=1.0,-{Diamond[open]}},
    header decor left/.style={gray,line width=1.0,{Diamond[open]}-},
    leadsto/.style={-{Stealth[length=0.7em,open,round]}},
}
\tikzset{
    header decor right/.style={gray,line width=1.0,-{Diamond[open]}},
    % header decor left/.style={gray,line width=1.0,{Diamond[open]}-},
    leadsto/.style={-{Stealth[length=0.7em,open,round]}},
}
\tikzset{
    header decor right/.style={gray,line width=1.0,-{Diamond[open]}},
    header decor left/.style={gray,line width=1.0,{Diamond[open]}-},
    % leadsto/.style={-{Stealth[length=0.7em,open,round]}},
}
